全極低功耗霍爾開關(guān)SS249使用手冊

1、 V2.10May1,2012 #V2.10May1,2012 V2.10May1,2012Packages3pinSOT23(suffixSO)3pinSIP(suffixUA)FunctionalBlockDiagramFeaturesandBenefitsSolid-StateReliabilitymuchbetterthanreedSwitchOmnipolar,outputswitcheswithabsolutevalueofNorthorSouthpolefrommagnetOperationfrom3.5Vto24VHighsensitivityfordirectreedswit

2、chreplacementapplicationsApplicationExamples一Solidstateswitch一SpeeddetectionInterrupterMagnetproximitysensorforreedswitchreplacementGeneralDescription:TheSS249OmnipolarHalleffectsensorICisfabricatedfrommixedsignalCMOStechnology.Itincorporatesadvancedchopper-stabilizationtechniquestoprovideaccuratean

3、dstablemagneticswitchpoints.TheoutputtransistoroftheSS249willbelatchedon(BOP)inthepresenceofasufficientlystrongSouthorNorthmagneticfieldfacingthemarkedsideofthepackage.Theoutputwillbelatchedoff(BRP)intheabsenceofamagneticfield.TypicalApplicationCircuitTypicalThree-WireApplicationCircuitAutomotiveand

4、SevereEnvironmentProtectionCircuitR1:100SECspole-independentsensingtechniqueallowsforoperationwitheitheranorthpoleorsouthpolemagnetorientation,enhancingthemanufacturabilityofthedevice.Thestate-of-the-arttechnologyprovidesthesameoutputpolarityforeitherpoleface.Itisstronglyrecommendedthatanexternalbyp

5、assbeconnected(incloseproximitytotheHallsensor)betweenthesupplyandgroundofthedevicetoreducebothexternalnoiseandnoisegeneratedbythechopper-stabilizationtechnique.Thisisespeciallytrueduetotherelativelyhighimpedanceofbatterysupplies.InternalTimingCircuitSample&OutputPinDefinitionsandDescriptionsSOTPinS

6、IPPinNameTypeFunction11VDDSupplySupplyVoltagepin23OUTOutputOpenDrainOutputpin32GNDGroundGroundpinTable1:PindefinitionsanddescriptionsAbsoluteMaximumRatingsParameterSymbolValueUnitsSupplyVoltage(operating)VDD6VSupplyCurrentIDD5mAOutputVoltageVOUT6VOutputCurrent【out5mAOperatingTemperatureRangeTa-40to8

7、5CStorageTemperatureRangeTs-50to150CESDSensitivity4000VTable2:AbsolutemaximumratingsExceedingtheabsolutemaximumratingsmaycausepermanentdamage.Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability.DCElectricalCharacteristicsDCOperatingParameters:TA=25C,VDD=2.75V.Param

8、eterSymbolTestConditionsMinTypMaxUnitsOperatingVoltageVDDOperating2.535.5VSupplyCurrentIDDAverage5PAOutputCurrentIOUT1.0mASaturationVoltageVSATIOUT=1mA0.4VAwakemodetimeTAWOperating175PSSleepmodetimeTSLOperating70mSTable3:DCelectricalcharacteristicsMagneticCharacteristicsOutputVoltage(V)MagneticFlux(

9、Gauss)OperatingParameters:TA=25C,VDD=2.75VDCSS249ParameterSymbolMinTypeMaxUnitsOperatingPointbop-+/-35+/-60GsReleasePointBRP+/-5+/-21-GsHysteresisBHYST-14-GsTable4:MagneticSpecificationsESDProtectionHumanBodyModel(HBM)testsaccordingto:Mil.Std.883Fmethod3015.7ParameterSymbolLimitValuesUnitNotesMinMax

10、ESDVoltageVESD4kVSS2494OSOmnipolarHighSensitivityMicropowerHallSwitch V2.10May1,2012PerformanceCharacteristicsTypicalMagneticSwitchpointsversusVddTypicalMagneticSwitchpointsversusTemperatureA12=rTyicalCurrentConsumptionversusT&mperature,Vdc3Vuldmn曲udQ4.llalJll0SfeipUirrenKuA)AwakeCUirenlSS2494OSOmni

11、polarHighSensitivityMicropowerHallSwitch V2.10May1,2012SECELECTRONICSINCSS2494OSOmnipolarHighSensitivityMicropowerHallSwitch #V2.10May1,2012SS2494OSOmnipolarHighSensitivityMicropowerHallSwitch #V2.10May1,2012UniqueFeaturesCMOSHallICTechnologyThechopperstabilizedamplifierusesswitchedcapacitortechniqu

12、estoeliminatetheamplifieroffsetvoltage,which,inbipolardevices,isamajorsourceoftemperaturesensitivedrift.CMOSmakesthisadvancedtechniquepossible.TheCMOSchipisalsomuchsmallerthanabipolarchip,allowingverysophisticatedcircuitrytobeplacedinlessspace.Thesmallchipsizealsocontributestolowerphysicalstressandl

13、esspowerconsumption.InstallationCommentsConsidertemperaturecoefficientsofHallICandmagnetic,aswellasairgapandlifetimevariations.Observetemperaturelimitsduringwavesoldering.TypicalIRsolder-reflowprofile:一NoRapidHeatingandCooling.RecommendedPreheatingformax.2minutesat150CRecommendedReflowingformax.5sec

14、ondsat240CESDPrecautionsElectronicsemiconductorproductsaresensitivetoElectroStaticDischarge(ESD).AlwaysobserveElectroStaticDischargecontrolprocedureswheneverhandlingsemiconductorproducts.SS2494OSOmnipolarHighSensitivityMicropowerHallSwitch V2.10May1,2012PackageUA,3-PinSIP:SS2494OSOmnipolarHighSensit

15、ivityMicropowerHallSwitch #V2.10May1,20122.13t1.87-*SS2494OSOmnipolarHighSensitivityMicropowerHallSwitch #V2.10May1,2012SS2494OSOmnipolarHighSensitivityMicropowerHallSwitch #V2.10May1,2012SensorLocation0.440.0r亠0.390.01*I+!gActiveAreaDepth:0.84(Noin)SS2494OSOmnipolarHighSensitivityMicropowerHallSwit

16、ch #V2.10May1,2012Notes:1+|龍.Controllingdimension:mm;.Lesdsmustbefreeofflashandplatingvoids;.Donotbendleadswithin1mmofleadtopackageinterface;.PINOUT:Pin1VDDPin2GNDPin3OutputSS2494OSOmnipolarHighSensitivityMicropowerHallSwitch #V2.10May1,2012-T1.272.54SS2494OSOmnipolarHighSensitivityMicropowerHallSwi

17、tch V2.10May1,2012PackageSOT,3-PinSOT-23:EndewNotes:.PINCUT:PiiilVDDPiii20ujutPiii3GND.AlldittiensicitEaneinirdllimeters;0.350.50so.SOT-23PackageHallLocation:*1.501.40SS2494OSOmnipolarHighSensitivityMicropowerHallSwitch #V2.10May1,2012SS2494OSOmnipolarHighSensitivityMicropowerHallSwitch V2.10May1,2012OrderingInformationPartNo.Pb-freeTemperatureCodePackageCodePackingSS249ESOTYES-40Cto8